From the pictures we've seen, these two mounts look very similar in form and function, but -- unless our eyes deceive us -- we're inclined to say the Griffin mount looks slightly more sturdy than the iKlip (but we can't say for sure until we get to try them out for ourselves in the real world).

However, there appears to be one significant difference between the two. The iKlip attaches to the neck of a mic stand -- leaving the actual head of the stand free to hold something else (like a mic). The Griffin Mic Stand Mount for iPad, on the other hand, is secured to the head of a mic stand alone. This basically means, if you're a singer / instrumentalist, you'll need a separate mic stand if you go for the Griffin mount.

The Griffin Mic Stand Mount for iPad is priced at US$39.99 and will be available later this month.